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8 votes
8 votes
Find the sum of (2.8 × 10−9) and (9.1 × 10−10). Write the final answer in scientific notation.

11.9 × 10−19
1.19 × 10−18
3.71 × 10−10
3.71 × 10−9

User Sanoodia
by
2.6k points

2 Answers

21 votes
21 votes

Answer:

The answer is C: 3.71 × 10−9.

Explanation:

User Liondancer
by
3.3k points
13 votes
13 votes

Answer:
3.71 * 10^(-9)

Explanation:


(2.8 * 10^(-9))+(9.1 * 10^(-10))\\\\=10^(-10)(28+9.1)\\\\=10^(-10)(37.1)\\\\=3.71 * 10^(-9)

User Divinesense
by
3.2k points